EP1419111A1 - Inhibiting scale deposition in oilfield tubulars - Google Patents
Inhibiting scale deposition in oilfield tubularsInfo
- Publication number
- EP1419111A1 EP1419111A1 EP02767189A EP02767189A EP1419111A1 EP 1419111 A1 EP1419111 A1 EP 1419111A1 EP 02767189 A EP02767189 A EP 02767189A EP 02767189 A EP02767189 A EP 02767189A EP 1419111 A1 EP1419111 A1 EP 1419111A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid
- tubular
- acoustic waves
- deposition
- whistle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
Definitions
- the present invention relates to inhibiting the deposition of scale in a fluid that includes water and ions that can precipitate as scale and subsequently be deposited in a conduit, or to removing a scale layer that is formed in the conduit.
- ⁇ inhibiting the deposition of scale' will be used to refer to both preventing the deposition of scale and to removing a scale layer.
- the fluid can further include oil and gas. Common scales that are encountered are BaS ⁇ 4, CaS04,
- the conduit through which the fluid flows can be a well tubular through which well fluids are passed to surface, or a pipeline.
- the present invention particularly relates to preventing scale deposition by applying acoustic energy in the form of acoustic waves in the fluid.
- German patent publication DE 2927671 discloses a method for preventing scale deposition in a heat exchanger at the earth surface.
- the known device units acoustic waves in a compact heat exchanger chamber to inhibit scale deposition primarily on the outer well of a coiled heating tube inside the chamber. It is an object of the present invention to provide a method for inhibiting scale deposition in an elongate well or other oilfield tubular by applying acoustic waves without supplying external energy to the device that generates the acoustic waves.
- the method according to the present invention for preventing scale deposition in a fluid that includes water and ions that can produce scale precipitation and deposition, which fluid flows through a well and/or other oilfield tubular comprises the steps of arranging a liquid whistle for producing acoustic waves in the fluid in the tubular, and allowing at least part of the fluid that flows through the conduit to pass through the liquid whistle to generate acoustic waves.
- a whistle is a device for generating acoustic waves in a liquid-containing fluid, which device comprises a nozzle and a blade that is arranged downstream of the nozzle. During normal operation liquid flowing out of the nozzle forms a jet that impinges on the blade and flows over the blade.
- the jet flow generates vortices in the fluid perpendicular to the fluid flow, which vortices cause the blade to vibrate and acoustic waves are generated.
- Examples of liquid whistles are described in USA patent specifications No. 3 176 964 and No. 5 858 107.
- An advantage of the present invention is that the fluid flowing through the conduit drives the acoustic whistle. Because the fluid flowing through the conduit drives the acoustic whistle no external power source is needed.
- the acoustic whistle is so designed that at the prevailing flow rates the frequency of the acoustic waves emitted by the whistle is in the range of from 20 Hz to 30 kHz.
- the frequency of the acoustic waves emitted by the whistle is in the range of from 20 Hz to 30 kHz.
- more than one liquid whistle is arranged in the conduit .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Method for preventing scale deposition in a fluid that includes water and ions that can produce scale precipitation and deposition flowing through a well and/or other oil field tubular comprising arranging a liquid whistle for producing acoustic waves in the fluid in the tubular, and allowing at least part of the fluid that flows through the tubular to pass through the liquid whistle to generate acoustic waves.
Description
INHIBITING SCALE DEPOSITION IN OILFIELD TUBULARS
The present invention relates to inhibiting the deposition of scale in a fluid that includes water and ions that can precipitate as scale and subsequently be deposited in a conduit, or to removing a scale layer that is formed in the conduit. In the specification and in the claims, ^inhibiting the deposition of scale' will be used to refer to both preventing the deposition of scale and to removing a scale layer. The fluid can further include oil and gas. Common scales that are encountered are BaSθ4, CaS04,
CaSθ4-2H2θ, SrSθ and CaCOβ .
The conduit through which the fluid flows can be a well tubular through which well fluids are passed to surface, or a pipeline. The present invention particularly relates to preventing scale deposition by applying acoustic energy in the form of acoustic waves in the fluid.
The cleaning action of acoustic waves is well known, see for example USA patent specification No. 3 648 769. It is further known to remove sulphate scale by applying low-frequency acoustic energy, see International patent application' publication No. 96/07 763.
The known methods require that external energy is supplied to the device that generates the acoustic waves. German patent publication DE 2927671 discloses a method for preventing scale deposition in a heat exchanger at the earth surface. The known device units acoustic waves in a compact heat exchanger chamber to inhibit scale deposition primarily on the outer well of a coiled heating tube inside the chamber.
It is an object of the present invention to provide a method for inhibiting scale deposition in an elongate well or other oilfield tubular by applying acoustic waves without supplying external energy to the device that generates the acoustic waves.
Accordingly the method according to the present invention for preventing scale deposition in a fluid that includes water and ions that can produce scale precipitation and deposition, which fluid flows through a well and/or other oilfield tubular, comprises the steps of arranging a liquid whistle for producing acoustic waves in the fluid in the tubular, and allowing at least part of the fluid that flows through the conduit to pass through the liquid whistle to generate acoustic waves. A whistle is a device for generating acoustic waves in a liquid-containing fluid, which device comprises a nozzle and a blade that is arranged downstream of the nozzle. During normal operation liquid flowing out of the nozzle forms a jet that impinges on the blade and flows over the blade. The jet flow generates vortices in the fluid perpendicular to the fluid flow, which vortices cause the blade to vibrate and acoustic waves are generated. Examples of liquid whistles are described in USA patent specifications No. 3 176 964 and No. 5 858 107.
An advantage of the present invention is that the fluid flowing through the conduit drives the acoustic whistle. Because the fluid flowing through the conduit drives the acoustic whistle no external power source is needed.
Suitably the acoustic whistle is so designed that at the prevailing flow rates the frequency of the acoustic waves emitted by the whistle is in the range of from 20 Hz to 30 kHz.
Suitably more than one liquid whistle is arranged in the conduit .
Claims
1. Method for inhibiting scale deposition in a fluid that includes water and ions that can produce scale precipitation and deposition, which fluid flows through a well and/or other oilfield tubular, which method comprises the steps of arranging a whistle for producing acoustic waves in the fluid in the tubular, and allowing at least part of the fluid that flows through the tubular to pass through the whistle to generate acoustic waves.
2. The method of claim 1, wherein a series of whistles are arranged at selected intervals along at least part of the length of the tubular.
3. The method of claim 2, wherein said intervals are between 1 and 100 m.
4. The method of any preceding claim, wherein the tubular is a production tubing in an oil and/or gas production well.
5. The method of claim 1, wherein the whistle exits acoustic waves having a frequency in the range from 20 Hz to 30 kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02767189A EP1419111A1 (en) | 2001-07-09 | 2002-07-09 | Inhibiting scale deposition in oilfield tubulars |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP01305888 | 2001-07-09 | ||
| EP01305888 | 2001-07-09 | ||
| PCT/EP2002/007638 WO2003006382A1 (en) | 2001-07-09 | 2002-07-09 | Inhibiting scale deposition in oilfield tubulars |
| EP02767189A EP1419111A1 (en) | 2001-07-09 | 2002-07-09 | Inhibiting scale deposition in oilfield tubulars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1419111A1 true EP1419111A1 (en) | 2004-05-19 |
Family
ID=8182084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02767189A Withdrawn EP1419111A1 (en) | 2001-07-09 | 2002-07-09 | Inhibiting scale deposition in oilfield tubulars |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20040195187A1 (en) |
| EP (1) | EP1419111A1 (en) |
| CA (1) | CA2453157A1 (en) |
| NO (1) | NO20040062L (en) |
| WO (1) | WO2003006382A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE329579T1 (en) | 1999-11-12 | 2006-07-15 | Abbott Lab | SOLID DISPERSION WITH RITONAVIR, FENOFIBRATE OR GRISEOFULVIN |
| US8025899B2 (en) | 2003-08-28 | 2011-09-27 | Abbott Laboratories | Solid pharmaceutical dosage form |
| US20100288492A1 (en) * | 2009-05-18 | 2010-11-18 | Blackman Michael J | Intelligent Debris Removal Tool |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3176964A (en) * | 1961-01-05 | 1965-04-06 | Sonic Eng Corp | Method and apparatus for producing acoustic vibrations in fluids |
| US3648769A (en) * | 1970-09-04 | 1972-03-14 | Beehler Vernon D | Well cleaner |
| DE2927671A1 (en) * | 1979-07-09 | 1981-01-29 | Theodor Prof Dr Ing Rummel | Heat-exchanger deposit-prevention equipment - comprises ultrasonic emitter causing walls to vibrate |
| US5717181A (en) * | 1996-05-13 | 1998-02-10 | University Of Florida | Method of reducing concentration of high molecular weight component in mixture of components |
| US5858107A (en) * | 1998-01-07 | 1999-01-12 | Raytheon Company | Liquid carbon dioxide cleaning using jet edge sonic whistles at low temperature |
-
2002
- 2002-07-09 CA CA002453157A patent/CA2453157A1/en not_active Abandoned
- 2002-07-09 US US10/483,236 patent/US20040195187A1/en not_active Abandoned
- 2002-07-09 WO PCT/EP2002/007638 patent/WO2003006382A1/en not_active Application Discontinuation
- 2002-07-09 EP EP02767189A patent/EP1419111A1/en not_active Withdrawn
-
2004
- 2004-01-08 NO NO20040062A patent/NO20040062L/en not_active Application Discontinuation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03006382A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2003006382A1 (en) | 2003-01-23 |
| US20040195187A1 (en) | 2004-10-07 |
| NO20040062L (en) | 2004-01-08 |
| CA2453157A1 (en) | 2003-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2343930A (en) | Ultrasonic cleaning of tubular members | |
| JP5647338B2 (en) | Apparatus for using hydrodynamic cavitation for therapy | |
| CA1224605A (en) | Sonic cleaning device and method | |
| US10987707B2 (en) | Combined method for cleaning a tubing string and apparatus for carrying out said method | |
| CA2072919A1 (en) | Process to increase petroleum recovery from petroleum reservoirs | |
| WO2018021949A1 (en) | Method for ultrasound stimulation of oil production and device for implementing said method | |
| EP3380702B1 (en) | Electric submersible pump with ultrasound for solid buildup removal | |
| AU2006224192B2 (en) | Method of generation of pressure pulsations and apparatus for implementation of this method | |
| US20180238646A1 (en) | Methods For Negating Deposits Using Cavitation Induced Shock Waves | |
| SA519401823B1 (en) | Induced Cavitation to Prevent Scaling on Wellbore Pumps | |
| US8240364B2 (en) | Heat exchanger tube, heat exchanger and use | |
| EP1419111A1 (en) | Inhibiting scale deposition in oilfield tubulars | |
| JP2011078894A (en) | Washing method using ultrasonic cavitation | |
| US10301194B2 (en) | Method and device for water treatment using radio waves | |
| CN206513351U (en) | A kind of arrayed ultrasonic vibrates control and remove of well paraffin device | |
| WO2014046560A1 (en) | Device for decolmatation of the critical area of exploitation and injection wells | |
| RU2312980C1 (en) | Method and device for oil recovery increase | |
| NZ196147A (en) | Flow testing of scale inhibitors | |
| JP5745807B2 (en) | Method for suppressing scale adhesion to equipment piping | |
| CN2469177Y (en) | Ultasonic dredging apparatus | |
| JPS6023794A (en) | Heat exchange device | |
| KR20090111089A (en) | Pipe cleaning device and method | |
| WO2019159021A1 (en) | Ultrasonic device for the prevention of biofilm, sedimentation and corrosion in borehole tubes and method thereof | |
| RU2135736C1 (en) | Gear to treat productive stratum | |
| JP4349076B2 (en) | Washing the stagnation part during washing of the fluid distribution piping line and evaluating the degree of washing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20031230 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
| 17Q | First examination report despatched |
Effective date: 20070522 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20090203 |